Lisbon · Portugal
May
Near-perfect conditions — warm days, low rain, before the summer surge.
Best match
#4 of 12 months
There are better months for Lisbon — see the full ranking below.
See when to go instead →Climate
High
20.7°C
Low
13.5°C
Rain
42mm
Sun
12.4hrs/day
30-year climate normals · Open Meteo ERA5
How May scores in Lisbon
Weather
Excellent
Value
Good
Crowds
Good
Events
Very good
Atmosphere
Excellent
What you gain in May
- ↑Consistently warm (20°C+) with very little rain — nearly ideal walking weather
- ↑Sea temperature rising to 17°C — early beach days possible
- ↑Book of Saints festivals begin warming up the Santos neighbourhood
What you sacrifice
- ↓Prices begin climbing — accommodation 15–20% higher than April
- ↓Weekend crowds building, especially Belém and Alfama viewpoints
- ↓Book well in advance — availability shrinks fast
How May compares to June (best month)
| Factor | May | June ★ |
|---|---|---|
| Weather | 8 | 9 |
| Value | 6 | 4 |
| Crowds | 6 | 4 |
May in other destinations
Climate data: 30-year normals (1991–2020) from Open Meteo ERA5 reanalysis. Scores compare months within Lisbon, not across destinations. Methodology →